asp.net 全部选中与取消操作,选中后的删除(ajax)实现无刷新效果_AJAX相关_

:<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
string Straction = "";
protected void Page_Load(object sender, EventArgs e)
{
Straction = Request["action"];
if(Straction=="action")
{
UserInfo();
}
if (Straction == "Delete")
{
DeleteUser();
}
}
///

/// 周昕 2009-6-8号加载用户详细信息
///

public void UserInfo()
{
SqlConnection mycon = new SqlConnection();
mycon.ConnectionString = ConfigurationManager.ConnectionStrings["BoBoConn"].ToString();
string sql = "select * from loginuser";
SqlCommand mycom = new SqlCommand(sql, mycon);
mycon.Open();
SqlDataReader myda = mycom.ExecuteReader();
StringBuilder str = new StringBuilder();
str.Append("");
while (myda.Read())
{
str.Append("");
str.Append("");
str.Append("");
}
str.Append("

全选	用户名	用户全名
"); str.Append("	" + myda["UserName"].ToString() + "	" + myda["FullName"].ToString() + "

");
str.Append(" ");
Response.Clear();
Response.ContentType = "application/text";
Response.Write(str);
Response.End();
}
///

/// 周昕 2009-6-8 删除选中用户的详细信息
///

public void DeleteUser()
{
//获取用户ID
string strID = Request["userid"];
string Userid = strID.Substring(0, strID.Length - 1);
//转换成为数组
string[] stridArray = Userid.Trim().Split(',');
string sql = "delete from loginuser where ID='" + stridArray[0].ToString() + "'";
for (int i = 0; i < stridArray.Length; i++)
{
string id = stridArray[i].ToString();
sql += "or ID='" + id + "'";
}
SqlConnection mycon = new SqlConnection();
mycon.ConnectionString = ConfigurationManager.ConnectionStrings["BoBoConn"].ToString();
mycon.Open();
SqlCommand mycom = new SqlCommand(sql, mycon);
int n = (int)mycom.ExecuteNonQuery();
mycon.Close();
if (n > 0)
{
Response.Clear();
Response.ContentType = "application/text";
Response.Write("ok");
Response.End();
}
else
{
Response.Clear();
Response.ContentType = "application/text";
Response.Write("no");
Response.End();
}
}
}